Restore Full Functionality to Your GM Vehicle
If you’re dealing with a cascade of bizarre electrical problems in your 2015 GMC Yukon or another compatible GM vehicle, a failing Body Control Module (BCM) is often the culprit. As a technician with over two decades of experience, I’ve seen firsthand how a faulty BCM can turn a reliable vehicle into a source of constant frustration. It acts as the central hub for your vehicle’s body electronics, and when it fails, chaos ensues. This isn’t just a replacement part; it’s a complete, hassle-free solution. We provide a professionally programmed BCM, ready for installation, by cloning the data from your original unit.
This service eliminates the need for expensive dealership visits, towing fees, and complex programming procedures. Simply send us your original BCM, and we’ll transfer all the essential vehicle-specific data—including VIN, mileage, and key information—to this replacement module. We then ship it back to you, ready for a straightforward, plug-and-play installation. Get your vehicle’s features like power windows, interior lighting, and security systems working correctly again with a reliable, cost-effective fix.
Is Your Vehicle Showing These Telltale BCM Failure Signs?
A failing BCM can manifest in numerous ways that might seem unrelated. If you’re noticing any of the following, it’s a strong indicator that your BCM needs attention. Often, you’ll see communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes.
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Flickering or erratic dashboard lights and instrument cluster gauges.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system acting up, causing no-start conditions.
- ✔ Radio or infotainment system malfunctions.
- ✔ Inconsistent or non-working windshield wipers.
- ✔ False warnings appearing on the driver information center (DIC).
From the Diagnostic Bay: The Case of the Haunted Sierra
A customer brought in a 2015 Sierra 1500 with symptoms that sounded like a ghost story. The dome lights would fade in and out while driving, the radio would randomly shut off, and occasionally, the truck wouldn’t start, despite having a new battery. They had already replaced the battery and alternator with no success. After hooking up my scan tool, I found a slew of communication codes pointing to the BCM. A visual inspection under the dash revealed signs of minor water intrusion from a leaky windshield cowl, a common killer of these modules. By cloning his original BCM data to a new unit, we restored all functions perfectly. It’s a classic example of how one component can cause a dozen different, confusing problems.
A Straightforward Guide to Installation
Once you receive your programmed BCM, installation is simple. This process is designed to be manageable for a DIY enthusiast with basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most compatible trucks and SUVs like the Yukon, Tahoe, and Silverado, the BCM is located under the driver’s side of the dashboard, near the steering column. For other models like the Corvette or CTS, it may be in the LH dash or on a firewall. A quick search for your specific model will confirm its location.
- Remove the Old Module: Carefully disconnect the electrical connectors. These connectors have locking tabs that need to be pressed or lifted to be released. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your newly programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair was successful.
Important Post-Installation Information
In some cases, additional steps with a professional scan tool may be required after installation:
- Airbag System Sync: If the airbag warning light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed to sync the airbag system. This is only necessary if the light appears.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be required on certain models.
- No Core Charge: You can keep your old module, as there is no core charge or need to return it.
Guaranteed Vehicle Compatibility
This BCM is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is guaranteed to fit the following GM models:
- 2015 Cadillac ATS, CTS, Escalade, Escalade ESV, XTS
- 2016 Cadillac ATS, CTS
- 2015 Chevrolet Corvette, Silverado 1500/2500/3500, Suburban 1500, Tahoe
- 2015-2016 Chevrolet Impala (New Style)
- 2015-2018 Chevrolet Sonic
- 2015 GMC Sierra 1500/2500/3500 & Denali Models
- 2015 GMC Yukon & Yukon XL 1500
Please verify your part number and vehicle model from the list to ensure proper fitment. Note that some models have specific options like ‘model year break point (opt AVF)’.
Frequently Asked Questions
How does the mail-in cloning service work?
After you purchase, we will contact you with simple instructions and a shipping address. You mail your original BCM to us. We then transfer its data to the replacement module and ship it back to you, usually within 1-2 business days of receiving it.
Will this fix my no-start problem?
If your no-start issue is caused by the BCM’s control over the vehicle’s security or starter relay circuits, then yes, this will resolve it. However, no-start conditions can have many causes, so proper diagnosis is key.
Is this truly plug-and-play?
Yes. Because we clone your vehicle’s original data, the replacement module is ready to be installed and function without any additional programming from a dealer. In rare cases, a minor relearn procedure like for the brake pedal sensor may be needed.
What if my original BCM is completely dead or missing?
This service requires a physically present original module to read the data from, even if it’s not functioning correctly. If your module is missing or too damaged to be read (e.g., fire/water damage), please contact us before ordering.
Do I need to return my old BCM after installation?
No, there is no core charge for this item. You can keep your original module.